Yarn guide for braiding carriers



July 28, 1936. M. KRISSIEP 2,049,385

YARN GUIDE FOR BRAIDING CARRIERS Filed March 50, 1935 INVENTOR:

ATTORNEY BY J I Patented July 28, 1936 tile Machine Works,

Wyomissing, Pa., a corporation of Pennsylvania Application March 30, 1935, Serial No. 13,799

7 Claims.

This invention relates to thread or yarn carriers for braiding machines and the like, and more particularly to special guide means therefor, for facilitating the passage of fibrous, metallic, or other threads, strands or wires from the yarn supply on the carrier to the braiding point of the machine.

Heretofore, in braiding carriers, and more particularly in cases where each carrier sup- 4 ports and controls a single wire strand or a plurality of wire strands in braiding a fabric, a rotatable guide roller has been used to reduce friction and resultant wear between the wire and the carrier in the passing of the'wire over the guiding members of the braiding carrier as the wire or group of wires passes from the supply spool 'orfbobbin on the carrier to the braiding point of the machine. The mounting for the guide roller is normally supported in a fixed portion of the carrier frame for pivotal movement about a vertical axis substantially tangent to the base of the groove in the guide roller so that the groove of said guide roller is atall times maintained in a plane disposed substantiallyin line with the braiding point of the machine as the carriers traverse their respective intersecting serpentine paths on the carrier raceplate of the machine. Heretofore this has been accomplished by means of a guide eye, through which'the wire or wires passed in extending from the groove of the guide roller to the br-aidingpoint of the machine.

When a multiplicity of wire strands were passed simultaneously as a single unit from each braiding carrier to the braiding point of the machine, one or more of the strands at times would rise out of the groove of the guide roller, during the braiding operation, due to non-uniform tensioning of the several strands during the winding thereof on the supply bobbin, which permitted the vagrant strands to flex laterally beyond the peripheral edge of the guide roller, usually resulting in the dropping of such wire strand or strands to one side or the other of the guide roller when the slack in the vagrant strand diminished, thereby causing the formation of imperfect fabric if such roller hopping of the strandwas not at once detected by the operator of the machine. 7

-One object of my invention is to provide the carrier, adjacent the guide-roller, with threadconfining means for preventing a thread or wire strand from moving laterally beyond the planes of the side edges of the roller groove.

A further object is to provide the guide roller with guard walls for preventing a thread or wire from hopping over the peripheral edge of the roller and becoming jammed between the sides of the roller and the bearings between which said guide roller is rotatably mounted by extending the guard walls vertically from said bearings along the opposite sides of the guide roller with portions of the inner surfaces of the guard walls projecting laterally in opposite directions over the side edges of the roller and in close proximity to the outer peripheral edges of the guide roller.

A further object is to provide a swivel mounting for the braiding carrier thread guide roller wherein the mounting is provided with threadconfining walls between which the guide roller is rotatably mounted and the thread travels and 'wherein said walls function to keep the groove of said guide roller in a plane in line with the braiding point of the machine at all times.

With these and other objects in View, which will be apparent from the following detailed description of the illustrative embodiment of the invention shown in the accompanying drawing, my invention resides in the novel mechanism and means for operating the same, as hereinafter more particularly pointed out in the claims.

In the drawing:

Figure 1 is a side elevational view of a braiding carrier illustrating the principles of the present invention as applied thereto;

Fig. 2 is an enlarged front elevational view of the guide shown in Fig. 1;

Fig. 3 is a transverse'sectional elevational view taken on the line 33, Fig. 1;

Fig. 4 is a vertical sectional view taken on the line 4-4, Fig. 2; and

Fig. is a plan view illustrating the relation between the thread or wire and the guide roller.

In braiding carriers, where a multiplicity of wire or other relatively stiff threads or strands is intended to be drawn simultaneously and to pass from a common supply spool or bobbin on the carrier to the braiding point of the machine concurrently, as a single unit, the tension applied to the respective strands of which the unit is composed, during the winding of the several strands at one time upon the common supply bobbin or spool, is sometimes irregular, consequently one or more of said individual wire strands will be wound more loosely in said supply package than the others and as the plurality of wire strands is drawn as a unit from the supply bobbin by the interbraiding of a number of such units at the braiding point of the machine during the braiding operation, any such looseness in any one of the separate wire strands will cause the loose strand to bulge relative to the line of movement of the unit, whereby the loose strand will frequently move out of the groove of the guide roller. In order to assure the return of the vagrant strand to said groove, it is the purpose of the present invention to provide guard walls beyond the periphery of the roller and in planes which may advantageously coincide with the planes of the oppositely disposed side edges "respectively of the roller groove and which may extend vertically from the bearings between which said guide roller is rotatably mounted, with a portion of said guard walls projecting transversely over. the outside edges of the face of said guide roller." -A conventional braiding carrier usually comprises a foot or base portion it! having an upright standard or frame member ll extending vertically therefrom, and .on which the common thread or wire supply spool or bobbin I2 is mounted. In an upper transverse portion l3 of the frame member H in the present instance is a. vertical rotatably' mounted tubular stud or eye l4 through which the wire, or other strand, thread, etc. passes in its travel from the supply bobbin [2 to the braiding point of the machine. The swivel stud or eye I4 is mounted. for free rotation about its vertical axis by means of ball bearings I5 and I6 which are seated in a housing IT formed in the upper transversely extending portion 13 of said frame member, between 5 an annular shoulder I la formed on and at the upper end of the swivel eye l4 and a. collar Mb mounted on the lower end thereof.

Extending vertically from the top of the eye I4 is. a pair of laterally spaced arms 18 and [9-, which are provided with bearings 20 and 21 respectively, formed in the upper outwardly turning end portions of said arms. I

Journaled in the bearings 2|] and 2! is a'pin or axle 22 on which is rotatably mounted a guide roller- 23.. The guide roller 23 is made freely rotatable on the pin 22 by means of a ball or other anti-friction bearing 24. Y

Extending substantially vertically from the bearings 20 and 2! of the arms l8 and I9 respectively, and adjacent, the oppositely disposed side edges respectivelypf the guide roller 23, is a .pair of plates or lugs 25 and 26affording, inthe present instance, substantially parallel oppositely disposedsegmental guard walls 21 andr28 which extend, circumferentially and radially with respect to and above the outer peripheral edges respectively of said guideroller 23. 7 That portion. of the. inner surface of each of the plates or lugs 25 and 26 which constitute the guard. walls 21 and 28 project toward each other transversely of and in close proximity to V the outer peripheral edge 29. of the guide roller 23 and, are respectively disposed in planes substantially coincident withthe planes of the side edges 30 and 3| of. the groove 32 in the roller 23, so that any vagrant strand or thread whichmay leave the groove 32 ofsaid guide roller 23 will be prevented from dropping orentering between th e outer side edges of said guide roller andthe inner sides .Of the arms 25 and 26, and will be directed back into the groove 32 as and when the bulge in the wire diminishes as the slack in thewire' is taken up, r V I From th illustration in Fig. 5 ,itfw'ill be clearly seenthat due to thetangential relation 'besaid guide into alignment with tween the axis of the stud l4 and the base of the groove 32 of the roller 23 the guide roller 23 and the guide eye swivel stud 14 may be turned in any direction by means of the wire contacting either one of the inner surfaces 21 or 28 of the guards 25 and 26 respectively, and that said Wire being taut between the braiding carrier and-the braiding point of the machine, the plane of the groove 32 of the guide roller 23 will always be held in a straight line pointing'to said braiding point as the braiding carriers traverse their-intertwining and intersecting courses over the raceplate of the-braiding machine beneath the braiding point thereof; 7 7

While I have'shown and described a preferred embodiment of my invention, obviously various changes in the construction may be made without departing from the scope of my claims; for example, the guard surfaces 21 and 28 may be of any, desired contour and may bein convergent or. divergent relation to each other rather than maintaining the parallel relationship shown, and the plates 25 and 230m which said guard surfaces are formed may be separate from and secured to the swivelled mounting roller 23 if desired.

Iclaim: i r

1. A braiding carrier comprising'a rotary thread guide, amounting for said guide'co'niprising a pair of laterally spaced, brackets afford ing'a rotary support for said guide therebetween, a pivot stud supporting" said brackets and'ar rangedwith its axis perpendicularto the axis of rotation of said guide, a bearing inJsaid. carrier for rotatably supporting said pivot stud, and a pair of guiding walls extending 'from said for the guide brackets respectively beyond the peripheral edge of the guide adjacent opposite sidesof the. guide where the thread leaves the guide in passing from the carrier, for preventing lateral displacement of the thread relative tothefguid'e andfor swinging said guide about. said stud axis to align the. guide at a1l.tinies1with the line of movement, of the thread in leaving the r carrier.

2. A braiding. carrier comprising a a rotary thread guide, guide means for mintaining the thread in registered position on. said guide, and fixed separate guide walls on opposite sides of the thread guide positioned torengagerthread leaving the guide and deviating in either direcretaining the thread in a zone spaced from the rotary'guide in substantial alignment with the thread'on said guide. e V

3. A braiding. carrier comprising a rotary thread guide, a pairof laterally spaced. brackets affording rotary support for said guidetherebetween, av pivot stud supporting. said brackets and arranged with its axis perpendicular to the axis of rotation of said guide, a bearin'glin said carrier for rotatably' supporting said pivot stud,

. tion from alignment. with the. guidelmeans for s and a pair of guide. walls extending from said brackets respectively and beyond the peripheral edge of the guide adjacent opposite sides thereof arranged to engage the thread in a position 011,-

set from the axis 'of rotation of said pivot stud upon deviation of the thread in either direction from alignment with the thread guide; to bring the thre'adby rotation of the pivot stud. 7 1

4. A braiding carrier comprising a circumferentially grooved rotary thread guide and relatively fixed guiding walls at opposite-sides respectively of said guide, extending toward each other and overhanging the periphery of said guide where the thread leaves the guide in passing from the carrier for preventing lateral displacement of the thread relative to the guide and preventing the thread from getting between the fixed guide walls and the rotary guide.

5. A braiding carrier comprising a circumferentially grooved rotary thread guide and relatively fixed guiding walls at opposite sides respectively of said guide, extending toward each other and overhanging the periphery of said guide at the opposite sides of the groove in said guide and circumferentially of and adjacent the peripheral edge of said guide where the thread leaves the guide in passing from the carrier for preventing lateral displacement of the thread relative to the guide and preventing the thread from getting between the fixed guide walls and the rotary guide.

6. A braiding carrier comprising a rotary thread guide, means for guiding the thread in registered position on said guide, a pair of laterally spaced brackets aflfording rotary support for said guide therebetween, a pair of guiding walls extending from said brackets respectively, and

lateral extensions on said walls projecting toward each other and overhanging the peripheral edge of the guide adjacent opposite sides of the guide where the thread leaves the guide in passing from the carrier for preventing lateral displacement of the thread relative to the guide and preventing the thread from getting between the fixed guide walls and the rotary guide.

7. A braiding carrier comprising a circumferentially grooved rotary thread guide, a pair of laterally spaced brackets afiording rotary support for said guide therebetween, a pair of guiding walls extending from said brackets respectively, and lateral extensions on said walls projecting toward each other, overhanging the peripheral edge of the guide adjacent opposite sides of the guide where the thread leaves the guide in passing from the carrier and extending to the planes of the side edges respectively of the guide groove for preventing lateral displacement of the thread relative to the guide and preventing the thread from getting between the fixed guide walls and the rotary guide.

' MAX KRISSIEP. 

